2003 Mercury Mountaineer Air Conditioning Parts

Keep Your 2003 Mercury Mountaineer in Top Shape with Quality Air Conditioning Parts

Whether you’re repairing or upgrading your Air Conditioning Part, using high-quality parts is key to keeping your 2003 Mercury Mountaineer looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Accumulator and Receiver Driers, Expansion Valve and Orifice Tubes, and AC Compressor Without Clutch. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Air Conditioning Parts from Trusted Brands

Looking for a reliable Air Conditioning Part? We’ve got you covered with options from brands you know and trust like Factory Air, Carquest Premium, and National. For example, Factory Air Air Conditioning Parts start at just $18.99 with an average 4.4 star rating. Carquest Premium and National offer similar pricing and quality, backed by strong customer feedback. With over 397 reviews and a solid 4 star average, you can shop with confidence knowing other Mercury Mountaineer owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Mercury Mountaineer Air Conditioning Part at Advance Auto Parts is around $69.15, with a range that starts at $3.29 and goes up to $398.99. With 56 options in stock from 9 trusted brands, finding the right fit is easy. Popular picks like Engine Camshaft Position Sensor Connector, Electrical Relay, and Multi-Purpose Relay start at just $15.79 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Air Conditioning Part, don’t forget to check out other key components like Engine Cooling Parts and HVAC Electrical Parts. At Advance Auto Parts, we’re here to help you keep your 2003 Mercury Mountaineer in peak condition, inside and out.

Essential 2003 Mercury Mountaineer Air Conditioning Parts

Carquest Premium – Multi-Purpose Relay (Part No.RAA1235)

Multi-Purpose Relay

from

$17.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
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Carquest Premium – A/C Suction Line Hose Assembly (Part No.T56457)

A/C Suction Line Hose Assembly

from

$110.99
Carquest Hose Assemblies are designed to carry refrigerant in an air conditioning system. They are manufactured to meet or exceed original equipment specifications and are designed to easily fit into the engine compartment.

Product Features:
  • 100% of hose assemblies use Goodyear hoses that meet original equipment specifications for wall thickness and permeation.
  • Tubes and mufflers are designed to meet original equipment specifications for wall thickness.
  • Fittings are designed to couple and seal to eliminate leaks. Trivalent plating is used on steel fittings to enhance corrosion resistance. The fittings conform to original equipment specifications to allow for the proper fit with related A/C components.
  • Welds and crimps meet and exceed original equipment tension specifications.
  • Manufactured to allow flexibility in the hose to conform to engine compartments.
  • O-Rings necessary for installation are included.
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Factory Air – O-Ring & Gasket A/C System Seal Kit (Part No.26820)

O-Ring & Gasket A/C System Seal Kit

from

$24.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Factory Air.

Product Features:
  • All the seals needed to complete the job
  • Compatible with both R134a and R12 refrigerants
  • Application specific
  • SUV and rear air applications
  • All the seals needed to complete the job
  • Compatible with both R134a and R12 refrigerants
  • Application specific
  • SUV and rear air applications
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Carquest Premium – Multi-Use Connector (Part No.PTA2073)

Multi-Use Connector

from

$34.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • Product constructed to meet all design and operating characteristics as intended by the manufacturer.
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Carquest Premium – Multi-Use Connector (Part No.PTA1128)

Multi-Use Connector

from

$23.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • Product constructed to meet all design and operating characteristics as intended by the manufacturer.
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Dorman – Help – Air Conditioning Service Port Caps (Part No.54374)

Air Conditioning Service Port Caps

from

$9.99
This A/C service valve cap is designed to match the fit and function of the original cap on specified applications, and is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this A/C service valve cap is designed to match the fit and function of the original cap on specified applications
  • Restores functionality – reliable replacement for an original part that is leaking or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest Premium – A/C Liquid Line Hose Assembly with Serviceable Orifice Tube (Part No.T56926)

A/C Liquid Line Hose Assembly with Serviceable Orifice Tube

from

$125.99
Carquest Hose Assemblies are designed to carry refrigerant in an air conditioning system. They are manufactured to meet or exceed original equipment specifications and are designed to easily fit into the engine compartment.

Product Features:
  • 100% of hose assemblies use Goodyear hoses that meet original equipment specifications for wall thickness and permeation.
  • Tubes and mufflers are designed to meet original equipment specifications for wall thickness.
  • Fittings are designed to couple and seal to eliminate leaks. Trivalent plating is used on steel fittings to enhance corrosion resistance. The fittings conform to original equipment specifications to allow for the proper fit with related A/C components.
  • Welds and crimps meet and exceed original equipment tension specifications.
  • Manufactured to allow flexibility in the hose to conform to engine compartments.
  • O-Rings necessary for installation are included.
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Carquest Premium – Multi-Use Connector (Part No.PTA1065)

Multi-Use Connector

from

$38.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • Product constructed to meet all design and operating characteristics as intended by the manufacturer.
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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KAI – Valve Core/Cap Kit (Part No.FTT010108)

Valve Core/Cap Kit

from

$16.99
New Standard Replacement A/C System Valve Core And Cap Kit

Product Features:
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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Carquest Premium – Multi-Use Connector (Part No.PTA1011)

Multi-Use Connector

from

$26.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • Product constructed to meet all design and operating characteristics as intended by the manufacturer.
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Carquest Premium – A/C Compressor and Component Kit (Part No.1292K)

A/C Compressor and Component Kit

from

$319.99
Save time on installation with everything you need in one box for an air conditioning replacement. The Carquest Premium A/C Compressor and Component Kit includes the necessary compressor, accumulator/receiver drier, and orifice tube/expansion valve, along with the necessary O-rings, gaskets, and oil. The parts are manufactured with strict quality standards from Gilmore, a climate control partner to Advance Auto Parts for over 25 years.

Product Features:
  • Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
  • New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
  • The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
  • All new compressors must pass a helium leak test and pump up function test prior to packaging.
  • Accumulators and receiver driers meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
  • Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
  • All accumulators are helium leak tested prior to packaging.
  • Each orifice tube and expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • The specific PAG oil required by your vehicle application is included.
  • O-rings and gaskets for all parts are application specific and packaged with the correct part to save time and eliminate the possibility of a leak from using the wrong O-ring or gasket.
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Carquest Premium – A/C Condenser (Part No.1083)

A/C Condenser

from

$134.99
The Carquest condenser is an integral component of the motor vehicle air conditioning system. This part condenses the refrigerant into a liquid to prepare it for entry into the compressor. The condenser is manufactured according to OEM design specifications to ensure a long life with quality performance. Exact design standards produce a seamless fit into the engine compartment.

Product Features:
  • This is a parallel flow condenser that contains small micro-channels. It is highly recommended that this condenser be replaced if a failure has occurred in the vehicle’s air conditioning system that has resulted in debris contaminating the system.
  • The Carquest condenser production process includes quality driven details such as using zinc-coated tubes and electrostatic paint spray at high temperatures to provide the best corrosion resistance and durability in our condensers.
  • Continuous molds, laser welding machines, semi-automatic assembly stations and other advanced equipment provide quality products.
  • Each condenser uses only the highest quality raw materials including pure aluminum (not substandard or recycled) to provide the highest quality standards from beginning to finished product.
  • All brackets are designed per OEM specifications to ensure strength and reduce vibration and movement.
  • We leak test 100% of our condensers in helium leak test chambers to ensure the product does not leak.
  • Our condensers are manufactured from rigid design standards to fit OEM dimensions.
  • Each condenser design endures a series of tests that includes performance testing, vibration testing, blast testing, and salt spray testing to simulate real world conditions.
  • Each Carquest condenser is packaged using superior box construction. This box is easy to open and seal. Each condenser is packaged in the box with internal protection to keep the part centered and away from the package edges.
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Carquest Premium – A/C New, with Clutch, with FS20 Compressor (Part No.T68189)

A/C New, with Clutch, with FS20 Compressor

from

$426.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
  • New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
  • The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
  • All new compressors must pass a helium leak test and pump up function test prior to packaging.
  • O-Rings and gaskets necessary for installation are included.
  • Matched high-quality needle-roller bearing ensures low friction and high load capability
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Driveworks – Electrical Relay (Part No.83265)

Electrical Relay

from

$15.79
Driveworks offers a line of aftermarket parts and accessories that are commercially acceptable and competitively priced, which provides professional technicians and DIYers with an affordable alternative for repairs.

Product Features:
  • Direct-fit OE replacement ensures ease of installation
  • Designed to meet OE performance
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
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FAG US – Bearing – DGBB (Deep Groove Ball Bearing) (Part No.5106-WCC)

Bearing - DGBB (Deep Groove Ball Bearing)

from

$70.99
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:
  • Radial Ball Bearing, Both Sides Shield.
  • Coverage of classic and new high-tech solutions for the best system coverage
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Carquest Premium – ABS Wheel Speed Sensor (Part No.ARC1088)

ABS Wheel Speed Sensor

from

$76.99
Carquest Premium anti-lock brake system (ABS) wheel speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium ABS sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each ABS sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium ABS sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • O-rings or seals are included (where applicable)
  • Weather-tight connectors prevent leaks and corrosion for longer life
  • Includes all necessary brackets and grommets for easier installation
  • Extensive design validation testing and 100% end-of-line tested
  • Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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Carquest Premium – A/C Refrigerant Filter (Part No.T39341)

A/C Refrigerant Filter

from

$7.49
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
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Carquest Premium – A/C Plate and Fin Evaporator (Part No.T54791)

A/C Plate and Fin Evaporator

from

$102.99
Carquest Evaporators are designed to remove heat from the air inside the passenger compartment of a vehicle resulting in cooler air temperatures. They are manufactured to meet or exceed original equipment specifications and are designed to easily fit into the engine compartment.

Product Features:
  • The design and manufacture of the evaporators result in uniform refrigerant distribution with optimal flow for improved performance and maximum heat transfer.
  • The evaporators are constructed to offer a lightweight, compact design that will fit easily within the engine compartment.
  • The surface treatment on each part ensures optimum water drainage to prevent mold and odors in the system.
  • The evaporators are 100% tested to meet or exceed original equipment specifications. Each part is helium tested to ensure no leaks.
  • O-Rings and gaskets necessary for installation are included.
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National – Multi-Purpose Bearing (Part No.5106-WCC)

Multi-Purpose Bearing

from

$46.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • BUILT TO LAST — Advanced heat treatment process for strength
  • PREMIUM MATERIALS — Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE — Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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Carquest Premium – A/C Discharge and Suction Line Hose Assembly (Part No.T55317)

A/C Discharge and Suction Line Hose Assembly

from

$129.99
Carquest Hose Assemblies are designed to carry refrigerant in an air conditioning system. They are manufactured to meet or exceed original equipment specifications and are designed to easily fit into the engine compartment.

Product Features:
  • 100% of hose assemblies use Goodyear hoses that meet original equipment specifications for wall thickness and permeation.
  • Tubes and mufflers are designed to meet original equipment specifications for wall thickness.
  • Fittings are designed to couple and seal to eliminate leaks. Trivalent plating is used on steel fittings to enhance corrosion resistance. The fittings conform to original equipment specifications to allow for the proper fit with related A/C components.
  • Welds and crimps meet and exceed original equipment tension specifications.
  • Manufactured to allow flexibility in the hose to conform to engine compartments.
  • O-Rings necessary for installation are included.
See More

Dorman – Help – Air Conditioning Bypass Pulley (Part No.34184)

Air Conditioning Bypass Pulley

from

$68.99
This A/C compressor bypass pulley is a cost-effective solution to allow the original equipment drive belt to be used while bypassing an inoperable A/C compressor.

Product Features:
  • Cost-effective solution – this bypass pulley retains the use of the standard drive belt after a failed A/C compressor is removed
  • Durable components – this bypass pulley uses quality components for a long service life
  • Easy to install – uses the same mounting points as the A/C compressor
  • Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life
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Carquest Premium – A/C Severe Temp Automatic Adjusting Orifice Tube (Part No.T38904)

A/C Severe Temp Automatic Adjusting Orifice Tube

from

$19.99
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each orifice tube is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • Color coded
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Carquest Premium – Multi-Purpose Relay (Part No.RAA1234)

Multi-Purpose Relay

from

$16.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
See More

Factory Air – New Ford FS10 Clutch Assembly with Coil (Part No.47867)

New Ford FS10 Clutch Assembly with Coil

from

$139.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Factory Air.

Product Features:
  • All mounting hardware included
  • Every coil tested for proper ohms
  • Vehicle specific applications
  • Coated to prevent corrosion
  • All mounting hardware included
  • Every coil tested for proper ohms
  • Vehicle specific applications
  • Coated to prevent corrosion
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Motorcraft – REGULATOR ASY (Part No.WPT-169)

REGULATOR ASY

from

$24.99
REGULATOR ASY

Carquest Premium – A/C Accumulator (Part No.T83363)

A/C Accumulator

from

$62.99
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.

Product Features:
  • All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
  • Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
  • All accumulators and receiver driers are helium leak tested prior to packaging.
  • O-Rings necessary for installation are included.
See More

Carquest Premium – A/C New, with Clutch, with Scroll Compressor (Part No.T78588)

A/C New, with Clutch, with Scroll Compressor

from

$355.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
  • New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
  • The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
  • All new compressors must pass a helium leak test and pump up function test prior to packaging.
  • O-Rings and gaskets necessary for installation are included.
See More

Carquest Standard – Remanufactured Ford Scroll Compressor with Clutch (Part No.DW77542)

Remanufactured Ford Scroll Compressor with Clutch

from

$255.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Carquest.

Product Features:
  • Built in a TS16949 certified manufacturing environment to ensure consistent quality that meets or exceeds OE specifications for fit, form, function and durability
  • All remanufactured compressors are built using the latest compressor technology available today and using strict remanufacturing processes
  • All units have new seals, O-rings, gaskets and clutch bearings
  • Tested for noise, vibration, durability, vacuum decay and pressure decay to ensure no leaks and longer life
  • Remanufactured compressors are 100 percent tested to ensure compressor function and noise level meets or exceeds OE specifications
  • Remanufactured compressors come pre-charged with 3 ounces of PAG oil for R134a or R1234yf applications
  • Remanufactured compressors are individually vacuum and pressure tested to ensure no leaks
  • Remanufactured compressors come with the R12/R134A/1234yf required O-rings /sealing washers to install the compressor
  • Remanufactured Compressors are built in a ISO9001:2015 Certified facility to ensure consistent quality standards in the Re-manufacturing process
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Most Popular Accumulator and Receiver Driers for 2003 Mercury Mountaineers

Enhance your 2003 Mercury Mountaineer with one of the 2 Accumulator and Receiver Driers we have in stock, starting at just $37.99.

Carquest Premium – A/C Accumulator (Part No.T83096)

A/C Accumulator

from

$61.99
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.

Product Features:
  • All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
  • Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
  • All accumulators and receiver driers are helium leak tested prior to packaging.
  • O-Rings necessary for installation are included.
See More

Carquest Premium – A/C Accumulator (Part No.T83095)

A/C Accumulator

from

$37.99
Carquest Accumulators and Receiver Driers are designed to store, filter and dry the air conditioning refrigerant to provide proper performance and durability for the air conditioning system. They are manufactured to meet or exceed original equipment specifications.

Product Features:
  • All parts meet or exceed original equipment standards for moisture absorption, pressure and temperature resistance, air tightness, vibration resistance, corrosiveness, and pulse pressure.
  • Desiccant is 100% tested and assembled in a controlled environment to ensure performance meets or exceeds original equipment standards.
  • All accumulators and receiver driers are helium leak tested prior to packaging.
  • O-Rings necessary for installation are included.
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Best-Selling 2003 Mercury Mountaineer Expansion Valve and Orifice Tubes

Upgrade your Mountaineer with one of our 6 best-selling Expansion Valve and Orifice Tubes, earning an average 4.17 stars rating across 144 reviews.

Carquest Premium – A/C Red Orifice Tube (Part No.T38635)

A/C Red Orifice Tube

from

$3.29
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each orifice tube is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • Color coded
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Carquest Premium – A/C Severe Temp Automatic Adjusting Orifice Tube (Part No.T38904)

A/C Severe Temp Automatic Adjusting Orifice Tube

from

$19.99
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each orifice tube is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • Color coded
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Carquest Premium – A/C Standard Temp Automatic Adjusting Orifice Tube (Part No.T38902)

A/C Standard Temp Automatic Adjusting Orifice Tube

from

$19.79
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
See More

KAI – A/C Orifice Tube (Part No.FJC3117)

A/C Orifice Tube

from

$3.99
New Standard Replacement A/C Orifice Tube

Product Features:
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Check Out The Large Selection Of Parts Available For Your Vehicle
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Carquest Premium – A/C TXV O-Ring Expansion Valve (Part No.T39148)

A/C TXV O-Ring Expansion Valve

from

$41.99
Carquest Expansion Valves are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each expansion valve is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • The bodies of these expansion valves are machined from a single block of aluminum or brass metal.
  • Each expansion valve has settings for tonnage and superheat based on the vehicle specifications.
  • Each expansion valve is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • Precision machined ports
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Carquest Premium – A/C Red Orifice Tube (10 pkg) (Part No.T635)

A/C Red Orifice Tube (10 pkg)

from

$26.99
Carquest Orifice Tubes are designed to regulate the flow of refrigerant through the air conditioning system to provide optimal cooling to the passenger compartment. Each orifice tube is manufactured to original equipment specifications to perform its function even in the harshest climates. Each part is supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each orifice tube is tested for function and leakage according to OEM specifications to ensure optimal performance of the air conditioning system.
  • O-Rings necessary for installation are included.
  • Application specific design
  • Color coded
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Top-Quality AC Compressor Without Clutch for 2003 Mercury Mountaineers

Choose a high-quality OEM or aftermarket AC Compressor Without Clutch for Mercury Mountaineers and enjoy top-notch performance from $255.99.

Carquest Premium – A/C New, with Clutch, with Scroll Compressor (Part No.T78588)

A/C New, with Clutch, with Scroll Compressor

from

$355.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
  • New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
  • The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
  • All new compressors must pass a helium leak test and pump up function test prior to packaging.
  • O-Rings and gaskets necessary for installation are included.
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Carquest Standard – Remanufactured Ford Scroll Compressor with Clutch (Part No.DW77542)

Remanufactured Ford Scroll Compressor with Clutch

from

$255.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Carquest.

Product Features:
  • Built in a TS16949 certified manufacturing environment to ensure consistent quality that meets or exceeds OE specifications for fit, form, function and durability
  • All remanufactured compressors are built using the latest compressor technology available today and using strict remanufacturing processes
  • All units have new seals, O-rings, gaskets and clutch bearings
  • Tested for noise, vibration, durability, vacuum decay and pressure decay to ensure no leaks and longer life
  • Remanufactured compressors are 100 percent tested to ensure compressor function and noise level meets or exceeds OE specifications
  • Remanufactured compressors come pre-charged with 3 ounces of PAG oil for R134a or R1234yf applications
  • Remanufactured compressors are individually vacuum and pressure tested to ensure no leaks
  • Remanufactured compressors come with the R12/R134A/1234yf required O-rings /sealing washers to install the compressor
  • Remanufactured Compressors are built in a ISO9001:2015 Certified facility to ensure consistent quality standards in the Re-manufacturing process
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Top Picks for 2003 Mercury Mountaineer AC Compressor With Clutch

Invest in one of our 3 durable AC Compressor With Clutch for your 2003 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Carquest Premium – A/C New, with Clutch, with Scroll Compressor (Part No.T78542)

A/C New, with Clutch, with Scroll Compressor

from

$398.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
  • New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
  • The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
  • All new compressors must pass a helium leak test and pump up function test prior to packaging.
  • O-Rings and gaskets necessary for installation are included.
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Carquest Premium – A/C New, with Clutch, with FS10 Compressor (Part No.T178588)

A/C New, with Clutch, with FS10 Compressor

from

$341.99
Carquest New Compressors are designed, manufactured and tested to meet or exceed strict original equipment specifications for superior quality and performance. Each new compressor is tested to provide durable life to the vehicle’s air conditioning system. All new compressor components are assembled using state of the art equipment and techniques to ensure smooth operation. Each part is equipped with a clutch and connector that matches the original equipment part and provides an exact replacement to your vehicle’s part. All compressors are supplied with the necessary gaskets and o-rings for installation.

Product Features:
  • Each new compressor design undergoes rigorous life cycle testing at high RPMs and pressures to ensure that they can withstand years in the harshest conditions.
  • New compressors are designed with utmost precision using 3D coordinate measuring machines to ensure a perfect fit.
  • The production process contains automated controls at every stage that alerts and halts production in case of an error, assuring that the finished product will always be flawless.
  • All new compressors must pass a helium leak test and pump up function test prior to packaging.
  • O-Rings and gaskets necessary for installation are included.
See More

KAI – A/C Compressor (Part No.ACP010162)

A/C Compressor

from

$331.99
New Standard Replacement A/C Compressor, Scroll Type, PV6 109 MM Clutch Pulley, Direct Mount, Pad Fittings

Product Features:
  • Scroll Type, PV6 109 MM Clutch Pulley, Direct Mount, Pad Fittings
  • Meets All Federal Motor Safety Standards
  • No Drilling Needed For Installation
  • No Modifications Needed For Installation
  • Direct Fit Replacement For Your Vehicle
  • Same Form Fit And Function As OE
  • Check Out The Large Selection Of Parts Available For Your Vehicle
See More

Our Top-Rated AC Condensers for 2003 Mercury Mountaineers

Make a smart move for your 2003 Mercury Mountaineer with our AC Condenser for $134.99.

Carquest Premium – A/C Condenser (Part No.1083)

A/C Condenser

from

$134.99
The Carquest condenser is an integral component of the motor vehicle air conditioning system. This part condenses the refrigerant into a liquid to prepare it for entry into the compressor. The condenser is manufactured according to OEM design specifications to ensure a long life with quality performance. Exact design standards produce a seamless fit into the engine compartment.

Product Features:
  • This is a parallel flow condenser that contains small micro-channels. It is highly recommended that this condenser be replaced if a failure has occurred in the vehicle’s air conditioning system that has resulted in debris contaminating the system.
  • The Carquest condenser production process includes quality driven details such as using zinc-coated tubes and electrostatic paint spray at high temperatures to provide the best corrosion resistance and durability in our condensers.
  • Continuous molds, laser welding machines, semi-automatic assembly stations and other advanced equipment provide quality products.
  • Each condenser uses only the highest quality raw materials including pure aluminum (not substandard or recycled) to provide the highest quality standards from beginning to finished product.
  • All brackets are designed per OEM specifications to ensure strength and reduce vibration and movement.
  • We leak test 100% of our condensers in helium leak test chambers to ensure the product does not leak.
  • Our condensers are manufactured from rigid design standards to fit OEM dimensions.
  • Each condenser design endures a series of tests that includes performance testing, vibration testing, blast testing, and salt spray testing to simulate real world conditions.
  • Each Carquest condenser is packaged using superior box construction. This box is easy to open and seal. Each condenser is packaged in the box with internal protection to keep the part centered and away from the package edges.
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Top-Rated Air Conditioning Part Brands For Your 2003 Mercury Mountaineer

When it comes to finding the perfect Air Conditioning Part for your 2003 Mercury Mountaineer, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 9 trusted brands. We carry the most popular Air Conditioning Part brands including Factory Air, Carquest Premium, and National, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $3.29. Purchasing a Air Conditioning Part from us here at Advance Auto Parts is a smart move for both you and your 2003 Mercury Mountaineer, providing peace of mind with parts that meet or exceed OEM standards.

Popular Factory Air 2003 Mercury Mountaineer Air Conditioning Parts

If you’re looking for a top-quality Air Conditioning Part for your 2003 Mercury Mountaineer, Advance Auto Parts has exactly what you need with our selection of Factory Air Air Conditioning Parts. We have 3 Factory Air Air Conditioning Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $18.99 and an average cost of $32.32, you’ll find the perfect Air Conditioning Part for your needs and budget. Factory Air Air Conditioning Parts for the 2003 Mercury Mountaineer come highly rated, with over 22 customer reviews and an impressive average rating of 4.4 stars. Choosing a Factory Air Air Conditioning Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
System Mounted Cycling Pressure Switch
from $18.99
(11)
System Mounted Cycling Pressure Switch
“Good.”
System Mounted High Cut-Out Pressure Switch
from $57.99
(4)
System Mounted High Cut-Out Pressure Switch
“needed high pressure so I bought the low pressure too,put high pressure first work fine so I change both to be on the safe side”
Standard Relay
from $19.99
(7)
Standard Relay
“Product was as expected, worked perfectly. However, check your vehicle, old relay etc to ensure you are ordering the correct one!”

Top-Quality Carquest Premium 2003 Mercury Mountaineer Air Conditioning Parts

For those in search of a high-quality Air Conditioning Part for their 2003 Mercury Mountaineer, Advance Auto Parts offers a great selection of Carquest Premium Air Conditioning Parts. With 3 Carquest Premium Air Conditioning Parts in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Air Conditioning Parts start at just $3.29, with an average price of $55.42, giving you a range of options to suit your budget. Backed by over 118 customer ratings and an average rating of 4.4 stars, Carquest Premium Air Conditioning Parts provide both reliability and excellent performance. Choosing a Carquest Premium Air Conditioning Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
A/C Discharge and Suction Line Hose Assembly
from $142.99
(2)
A/C Discharge and Suction Line Hose Assembly
“Will this sensor fit for the 2009 TSX acura”
A/C Red Orifice Tube
from $3.29
(19)
A/C Red Orifice Tube
“It was super awesome and great”
A/C Severe Temp Automatic Adjusting Orifice Tube
from $19.99
(97)
A/C Severe Temp Automatic Adjusting Orifice Tube
“Good item”

FAQs for 2003 Mercury Mountaineer Air Conditioning Parts

What are the best-selling Air Conditioning Parts for 2003 Mercury Mountaineers?

Out of 56 Air Conditioning Parts that fit 2003 Mercury Mountaineers, the following parts are the top sellers:

What’s the price range for 2003 Mercury Mountaineer Air Conditioning Parts?

The prices of Air Conditioning Parts for the 2003 Mercury Mountaineer range from $3.29 up to $398.99 for the most premium parts.

What is the average price of an Air Conditioning Part for a 2003 Mercury Mountaineer?

The average price for Air Conditioning Parts for the 2003 Mercury Mountaineer is $69.15. Keep in mind the variety of part types within our Air Conditioning Part category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Air Conditioning Parts for other Mercury Mountaineer model years?

Yes, we carry Air Conditioning Parts for 12 model years of Mercury Mountaineers between 1997 and 2010. The following model years are the most popular for Air Conditioning Part purchases: 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2002, and 2001.

What are the cheapest Air Conditioning Parts for my 2003 Mercury Mountaineer?

The cheapest 2003 Mercury Mountaineer Air Conditioning Parts we carry are:

Does Advance Auto Parts sell Air Conditioning Parts for any other 2003 Mercury models?

Yes. We stock Air Conditioning Parts for 1 other popular 2003 Mercury models. Some of the most popular are 2003 Grand Marquis Air Conditioning Parts and 2003 Marauder Air Conditioning Parts.

What are the top-rated Air Conditioning Parts that fit the 2003 Mercury Mountaineer?

Based on 397 reviews by customers, our 2003 Mercury Mountaineer Air Conditioning Parts have an average customer rating of 4 stars. These are the highest-rated categories of Air Conditioning Parts for the 2003 Mercury Mountaineer and their top-rated products:

What types of Air Conditioning Parts do you sell for my 2003 Mercury Mountaineer?

As of 11/2/25, these are some of the most in-demand types of Air Conditioning Parts for a 2003 Mercury Mountaineer:

Can I get help with 2003 Mercury Mountaineer Air Conditioning Part orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Air Conditioning Parts and more.

What is your return policy for Mercury Mountaineer Air Conditioning Parts?

Advance Auto Parts keeps returns simple. For new Mercury Mountaineer Air Conditioning Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.